TW201707908A - Process of injecting molten ceramic into gypsum mold to form ceramic - Google Patents

Abstract

A process of manufacturing ceramic comprising preparing a gypsum mold, pouring coarse ceramic material into the gypsum mold, pouring molten fine ceramic material into the gypsum mold to uniformly mix with the coarse ceramic material, drying the gypsum mold, removing a half-finished ceramic out of the mold, polishing the half-finished ceramic, and heating the half-finished ceramic to produce a finished ceramic without hollows formed therein.

Description

Solid grouting forming method for thick workpiece

The invention relates to a solid grouting forming method for a thick workpiece, in particular to a solid grouting forming method which has a hand-made hand feeling and a thick workpiece which avoids shrinkage and depression when the ceramic product is manufactured.

Grouting is a method for pouring mud into a plaster mold to make it into a product. It is used for batch molding of complex or large-sized products. The method of grouting is more differentiated. One is hollow grouting. Second, the solid grouting, as shown in Figure 1, the hollow grouting 6 step is to provide a hollow gypsum mold 61, followed by grouting 62, that is, injecting mud into the hollow gypsum mold 61, and then using the characteristics of gypsum water absorption, close The mud in the inner wall of the hollow plaster mold 61 is absorbed by the gypsum in the mud, and a mud layer is formed on the inner wall surface of the hollow plaster mold 61. The thickness of the mud layer depends on the time when the hollow plaster mold 61 adsorbs the moisture of the mud; When the mud layer reaches the required thickness (the thickness of the mud layer is mostly less than one centimeter), the slurry 63 is poured, and the hollow plaster mold 61 is poured out more than the mud, and the blank 64 is completed.

Referring to FIG. 2, the solid grouting 7 step is to provide a hollow plaster mold 71, followed by grouting 72, that is, injecting mud into the hollow gypsum mold 71, but differs from the above hollow grouting 6 in that solid grouting 7 The hollow gypsum mold 71 is formed by combining a plurality of gypsum molds. Therefore, as can be seen from FIGS. 1 and 2, the hollow gypsum mold 71 of the solid grouting 7 has a small internal space, and is sucked after the step grouting 72. The slurry 73, since the solid grouting 7 is used, the thickness of the mud layer will be equal to the inner space of the hollow gypsum mold 71 in the step of sucking the slurry 73, and it is not necessary to pour out excess mud, waiting for the moisture absorption of the mud to be completed. Thereafter, the blank 74 is completed.

The products made by grouting are mass-produced. Therefore, the visual effect of each product is the same, and the user cannot feel the texture of the handicraft. In addition, some ceramic products are needed during the process of grouting. There are thicker, or solid parts, such parts are solid structures, but grouting is to infuse the mud containing moisture into the plaster mold. Therefore, the part of the solid structure is required to be In the process of adsorption of the plaster mold, it is easy to cause a change in volume, and in the subsequent firing, cracks or shrinkage depressions are easily generated. For example, the thickness that can be achieved by solid grouting is about 1 cm, more than 1 cm. Waiting for the gypsum to absorb water for a longer period of time, which is inconsistent with the cost of the factory operation, and the adobe center will “sink and sag” because some of the thick internal mud will not fall out and cannot be reached, and after the water is sucked away, The internal mud must be reduced, but it can not be replenished with new mud like the opening mold of the cup. Therefore, the center will produce shrinkage, depression and adobe shrinkage. The deformation, if the atrophic part is cut, in fact, there is a relatively wet adobe inside, such as the state of the sugar heart egg yolk, the outer layer is hardened but the inside is still soft, so it will continue to shrink and deform during the drying process; 1 and 2 cannot be used for the production of a thick workpiece. Referring to Fig. 3, a thick workpiece can be produced by the method of press forming 8, by providing a plaster mold 81 in which a plaster mold 81 is placed. The thick soil plate 82 is connected to an object such as a face stick, and is pressed back and forth on the thick soil plate 82 until the thick soil plate 82 is completely fitted to the plaster mold 81, thereby completing the production of the thick workpiece 83, but The shortcomings can only be used in the thick shape of the two-dimensional relief. If the thick workpiece is a polyhedron or a multi-piece mold, and it needs to be rich in shape, etc., it cannot be produced by means of rolling molding 8. Furthermore, Hand-pressed thick objects are easy to cover the air in the soil. During the heating process of the kiln, the air will not be able to leave the adobe and cause serious explosion. In addition to the above, the manual compaction will not be due to the compaction density of the soil. First, the object to deflect upon drying, deformation.

It is an object of the present invention to provide a solid grout forming method having a thick workpiece that is hand-crafted.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a solid grout forming method that avoids the formation of thickened workpieces that cause shrinkage depressions in the manufacture of ceramic articles.

A solid grouting forming method for a thick workpiece capable of achieving the above object of the invention comprises the steps of: preparing a gypsum mold; providing a plurality of coarse materials; placing the coarse materials in a high-thickness position of the gypsum mold; providing a slurry and a plurality of fine materials; mixing the fine materials into the slurry; injecting the slurry mixed with the fine materials into the plaster mold; distributing the fine materials in the plaster mold while flowing; After the gypsum mold is dried, a green body is formed.

Thereby, the coarse material is contained in the solid portion of the rough, and during the drying process, the shrinkage depression caused by the moisture being absorbed by the plaster mold can be offset, and at the same time, the fine materials are not Evenly distributed in the slab, after the slab is finished and fired, a porcelain product having a hand-made texture and a solid portion does not cause a shrinkage depression is completed.

In a preferred embodiment of the invention, the plaster mold is a plaster mold of two or more and combined with each other.

In a preferred embodiment of the present invention, the slurry mixed with the fine materials is injected into the plaster mold, and the slurry mixed with the fine materials is filled in the high-thickness position of the plaster mold. .

In a preferred embodiment of the invention, the volume of the coarse material is greater than the fine material.

In a preferred embodiment of the invention, the fine material can be made of leather, plastic, ceramic (clinker), stone or glass.

In a preferred embodiment of the present invention, the coarse material is an earth material, the soil material can be used for various soil materials, or different oxides are added for texture change, and the sintering shrinkage ratio of the soil material needs to be close to the mud material. The shrinkage ratio.

In a preferred embodiment of the present invention, the slurry is distributed in the plaster mold while flowing, and the slurry simultaneously disperses a part of the coarse material to other parts of the plaster mold.

Please refer to all of the figures shown in FIG. 4 to FIG. 9 . The solid grouting forming method for the thick workpiece provided by the present invention comprises the following steps: (100) preparing a gypsum mold; (101) providing a reclaimed coarse material; (102) The coarse material is placed in a high-thickness position of the plaster mold; (103) providing a slurry and a retort fine material; (104) mixing the fine material into the slurry; (105) mixing the fine The slurry is injected into the plaster mold; (106) the slurry is distributed in the plaster mold while flowing; (107) the slurry is dried in the plaster mold to form a blank.

When the above steps are performed, first, a plaster mold 1 is prepared according to the ceramic article to be produced, and the plaster mold 1 includes at least two or more plaster molds 11 according to different ceramic articles, and the plaster molds 11 can be Combining with each other, a space and at least one opening 14 are formed inside the plaster mold 1. In addition, the plaster mold 1 has at least one or more high-thickness positions 12 and one or more depending on the ceramic article. Thin thickness position 13.

In the present specification, in order to facilitate explanation and explanation, the plaster mold 1 is described in the manner of making a ceramic handicraft, and the plaster mold 1 has two symmetrical plaster molds 11, and the coarse material 2 is placed on the same. In the high-thickness position 12, after the gypsum mold 11 is combined into the gypsum mold 1, the grouting operation is performed, and the fine materials 4 are mixed into the slurry 3 before grouting, and then the opening 14 is The slurry 3 having the fines 4 will be injected, and during the re-injection, the fines 4 will be unevenly distributed in the low-thickness position of the plaster mold 1 along with the flow of the slurry 3. 13, at the same time, part of the coarse material 2 will also be unevenly dispersed inside the plaster mold 1 along with the flow of the slurry 3, it should be noted that the high-thickness position 12 will still be stuck several large. The coarse material 2 ensures that it is not impulsive; then, the micro-porous gypsum mold 1 absorbs the moisture contained in the slurry 3, and therefore, at the high-thickness position 12 and the low-thickness position 13 of the plaster mold 1 Will form a rough blank 5 as the water is reduced, then the plaster mold 1 After the separation, the blank 5 is removed, and the blank 5 has a thick member 51 and a thin member 52. Since the thick member 51 contains the coarse materials 2, the coarse materials 2 will offset the coarse material. The volume shrinkage caused by the drying of the thick member 51 of the blank 5 causes the blank 5 to be free from shrinkage depressions or cracks after being finished and fired; further, the blank 5 is unevenly distributed. The fine material 4 and the coarse material 2, after the blank 5 is finished and fired, the surface of the ceramic article made of the blank 5 has an irregular texture and an uneven surface, so that The ceramics formed by grouting have a hand-crafted texture. It should be noted that the volume of the coarse material 2 is larger than the fine material 4, and at the same time, the fine material 4 may be made of leather, plastic, ceramic (clinker), stone or glass. For example, the fine material 4 is Leather, plastic, etc., will burn out at the high temperature of the kiln, form a hole effect, form a porous ceramic, and have functional or appearance effects, and the fine material 4 is metal, stone or glass, because of its chemical composition Differently, it will chemically react with the adobe to produce different natural color or texture to create the value of the process; and, wherein the coarse material 2 is an earth material, the soil material can be used for various soil materials or added with different oxides. The texture changes, and the ratio of firing shrinkage of the soil material is close to the shrinkage ratio of the slurry. Therefore, the change of the soil or oxide component of the coarse material 2, together with the change of the fine material 4, causes the ceramic product to be produced. Produces different texture changes.

The detailed description of the preferred embodiments of the present invention is intended to be limited to the scope of the invention, and is not intended to limit the scope of the invention. The patent scope of this case.

1‧‧‧Gypsum mould
11‧‧‧Gypsum mold
12‧‧‧High thickness position
13‧‧‧thick thickness position
14‧‧‧ openings
2‧‧‧Aluminum
3‧‧‧ mud
4‧‧‧Details
5‧‧‧ rough
51‧‧‧Thick objects
52‧‧‧Thin objects
6‧‧‧ hollow grouting
61‧‧‧ hollow plaster mould
62‧‧‧ grouting
63‧‧‧paste
64‧‧‧ Body
7‧‧‧solid grouting
71‧‧‧Hollow plaster mould
72‧‧‧ grouting
73‧‧‧Slaughter
74‧‧‧ Body

Figure 1 is a schematic view of a conventional hollow grouting; Figure 2 is a schematic view of a conventional solid grouting; Figure 3 is a schematic view of a conventional press forming; Figure 4 is a flow chart of a preferred embodiment of the present invention; FIG. 6 is a schematic view of the operation of the preferred embodiment of the present invention; FIG. 7 is a schematic diagram of the operation of the preferred embodiment of the present invention; FIG. 9 is a schematic diagram 5 of the operation of the preferred embodiment of the present invention.

(100) ‧ ‧ Preparing a plaster mold

(101) ‧ ‧ provide a plurality of rough materials

(102) ‧‧‧The coarse materials are placed in a high-thickness position of the plaster mold

(103)‧‧‧ Provide a slurry and a plurality of fines

(104) ‧‧‧These fines are mixed into the mud

(105)‧‧‧Inject the mud mixed with the fine material into the plaster mold

(106) ‧‧‧The mud is distributed in the plaster mold when the mud flows

(107) ‧ ‧ After the mud is dried in the plaster mold to form a rough

Claims (8)

A solid grouting forming method for a thick workpiece, the steps of which are: preparing a gypsum mold; providing a plurality of coarse materials; the coarse materials are placed at a high-thickness position of the gypsum mold; providing a slurry and a plurality of fine materials; The fine material is mixed into the slurry; the slurry mixed with the fine materials is injected into the plaster mold; the slurry is distributed in the plaster mold while flowing; after the slurry is dried in the plaster mold A rough blank is formed. A solid grouting forming method for a thick workpiece according to claim 1 , wherein the gypsum mold is a gypsum mold of two or more and combined with each other. The solid grouting forming method of the thick workpiece according to the second aspect of the invention, wherein the slurry mixed with the fine material is injected into the gypsum mold, and the slurry mixed with the fine material is filled The high thickness position of the plaster mold is filled. A solid grouting forming method for a thick workpiece as described in claim 2 , wherein the gypsum mold further comprises one or more thin thickness positions. The solid grouting forming method of the thick workpiece according to claim 1 , wherein the volume of the coarse material is larger than the fine material. A solid grouting forming method for a thick workpiece as described in claim 1 , wherein the fine material can be made of leather, plastic, ceramic (clinker), stone or glass. The solid grouting forming method for a thick workpiece according to claim 1 , wherein the coarse material is an earth material, and the sintering shrinkage ratio of the earth material is close to a shrinkage ratio of the mud. The solid grouting forming method of the thick workpiece according to claim 1 , wherein the slurry distributes the fine materials in the gypsum mold, and the slurry simultaneously disperses a part of the coarse material to the gypsum mold Other parts.